The recipe: take 5 miles of mud trails, fill them with more than 25 obstacles, add snow, and serve. The Badass Bash obstacle course is more than a race—it's a battle where competitors learn what they are made of. Across the 5-mile course, participants dash, clamber, and crawl through and over a series of obstacles inspired by firefighter, police, and military training. The favorites are back (Target Practice, Submarine Mines, and Check the Attic, among others), but there's also The Badass Bash's take on holiday cheer: Santa's Sack, Chimney Sweep, Don't Drop the Ornament, and more. But the real kicker is the snow. The event's organizers haul in a bunch of the cold white stuff, adding a chilly but festive note to the high-octane event. While adults are getting their hands dirty, kids 12 and younger can do the same on their own 0.5-mile course, the Kick Butt Kids Elf Bash. After the race, guests can mingle at the after party, which is livened up by free beer and live entertainment.

A portion of the proceeds of The Badass Bash benefits three fire, police, and veterans’ charities. All of the proceeds from the Kick Butt Kids Bash go to Caleb's Crusade, which helps children and families who are battling pediatric cancer.